Shake-out apparatus



Au 4, 1931. I v. J. DAVIS sHAKE-ouf APPARATUS Filed Feb. 17, 1928 36 P mm. mm. m-

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p. jolted positioned on the device;

Patented Aug. 4, 1931 UNITED STATES PATENT OFFICE VERNON J. DAVIS, or BUFFALO, NEW YORK, ASSIGNOR T AMERICAN RADIATOR COM- 5,

PANY, OF NEW YORK, N. Y., A CORPORATION OFN-EW JERSEY SHAKE-OUT APPARATUS Application filed February 17, 1928. Serial No. 255,164.

My invention relates to new and useful improvements in shake-out apparatus of the type adapted to shake or jolt material from a container, and more particularly for re- 6 moving burnt core sand from metal castings.

The primary object of the invention is to provide an apparatus which will efliciently impart rapid blows 'or shocks to a casting so as to break up and shake out burnt sand contained therein, and, further, to provide such an apparatus which will be rugged in construction so as to stand up under the severe usage to which it is necessarily subjected.

The invention consists in the improved construction and combination of parts, to be more fully described hereinafter, and the novelty of which will be particularly pointed out and distinctly claimed.

In the accompanying drawings, to be taken as a part of this specification, I have fully and clearly illustrated a preferred embodiment of my invention, in which drawings- Figure 1 is a side view in section on the line 11 of Fig. 2, showing a member to be Fig. 2 is a rear view looking from the left toward the right of Fig. 1;

Fig. 3 is a front plan view of a supporting frame, and

Fig. 4 is a detail of an element.

Referring to the drawings by characters of reference, 1 designates a base member having, adjacent its forward edge, spaced ears or lugs 2, 3 having oppositely disposed bearing 5 openings 4, 5, respectively, in which are supported the opposite ends of a rod or shaft 6. Journaled or pivoted on this shaft 6 is a support for the object to be acted upon, said support preferably being in the form of a t 4 frame, generally designated 7 which is preferably, but not necessarily, of substantially rectangular form in plan outline, see Fig. 3.

The frame 7 comprises substantially parallel side frame members 8, 9, preferably in the form of I beams having their web por tions in substantially parallel vertical planes. At their upper ends the members 8, 9 are joined by transverse rigid members 10, 11, preferably in the form of angle irons, each having one flange, as at 12, 13 substantially in the planeof the top ends of members 8, 9,

rivets,bolts, or the like, to the rear flanges 16,17 of the I-beams 8, 9, respectively. The opposite ends of flange 15 are secured rigidly by rivets, bolts, or the like, to the front flanges 18, 19 of the I-beams 8, 9 respectively. At their lower ends the members 8, 9 are joined by a plate 20, preferably substantially rectangular, which is secured at its ends to the front flanges 18, 19,'respectively, as by rivets, bolts or the like. Extending rearwardly from the side frame members 8, 9, and preferably at an acute angle thereto of substantially degrees, are arm members 21, 22 respectively, preferably channel beams, having bearing apertures 23, 24, respectively, which are 'journaled on the shaft 6 adjacent the lugs 2, 3, respectively, to thereby provide pivotal support for frame 7, such that it extends upwardly from the'base member 1 at an angle of substantially 30 degrees to the vertical. The arm members 21, 22 are preferably braced by angle members 25', 26, rigidly secured by' any suitable means to the rear flanges 16, 17, and to the channel arm members -21, 22. Extending from the front or supporting face 27 of the: frame 7 at the lower end thereof, is a support member 28, preferably in the form of an agle-iron having one flange 29 secured'at its ends by rivets to the front flanges 18, 19, respectively, and having its other flange 30 extending outward from the frame to provide a shelf. The shelf or support member 28 is preferably braced by an angle-iron 31 having one flange 32 secured at its ends by rivets to the front flanges 18, 19, respectively, and having its other-flange 33 abutting the under side of and secured by rivets to the flange 30 of member 28. Extending between the side frame members 8, 9, and secured thereto, is a spacer member 34 positioned adjacent the lower end of frame 7 but slightly above shelf 30 and projecting outwardly from face 27 for a portion of the Width of shelf 30. Substantially midway of the length of side members 8, 9, is a transverse frame member 35, which is secured by rivets to the front flanges 18, 19 and which extends at each end laterally beyond the members 8, 9, the ends being provided, respectively, with lateral retaining or stop portions 36, 37 projecting forwardly from face 27. At its top the frame 7 has a plate or platform 38, for a purpose to be described, which is rigidly secured in any suit able manner to the flanges 12, 13 of the transverse members 10, 11, respectively.

Positioned 0n and rigidly secured to the base member 1 adjacent the rear portion thereof, are a pair of support members 39, 40, which are spaced apart and which extend upwardly from the base member 1 to points in a plane which is substantially perpendicular to the face 27 at the transverse center line of the frame 7. The members 39, 40 are alined with the side frame members 8, 9, re spectively, that is, they are substantially in the vertical planes of the webs of members 8, 9. Each of the members 39, 40 is bifurcated at its upper free end to provide yokes 41, 42. Substantially in the transverse center line and secured rigidly to the side frame rear flanges 16, 17, are bracket members 43, 44, which are bifurcated to provide yokes 45, 46, respectively. Positioned between the cooperating yokes 41, 45 and 42, 46, respectively, are resilient means, designated, generally, 47, 48, and since each of these means is the same, but one of them will be described, the reference characters applied to the second means being the primes of those characters applied to the described means. The means 47 comprises a pair of bell-crank levers 49, 50, having arms 51, 52 and 53, 54, respectively, the arms 51 and 53 being pivoted on and secured together by a pin 55, and the arms 52 and 54 extending in spaced parallel opposed relation. The arms 52, 54 have cylindrical portions 56, 57, respectively, at their free ends, which are recessed, as at 58, 59, to provide opposed spring seats or sockets. Interposed between the arms 52, 54 is a resilient member 60, preferably a spring of the coil type, having its ends seated in the sockets 58, 59, respectively. On the arms 52, 54 are lugs 61, 62, respectively, which preferably are substantially in alinement with the longitudinal aXis of coil spring 60. The lugs 61, 62 arepositioned between the arms of the yokes 41, 45, respectively, and are pivotally secured therebetween by pivot pins 63, 64, respectively, which are passed'through alined apertures in each of the yoke arms and its interposed lug.

Rigidly secured on the plate or platform 38, by any suitable means, is a means for reciprocatingthe frame7 at a high rate of speed, and preferably comprising an electric motor 65 having an unbalanced wheel 66, preferably mounted on the motor armature shaft to be rotated thereby, so that rotation of the unbalanced wheel causes rapid reciprocation of frame 7 on the shaft 6.

The operation of the device is as follows: A hollow member or casting 67, such, for example, as a boiler section containing burnt core sand, and from which it is desired to remove the sand, is placed on the shelf or flange 30 and rests freely of its own weight against the supporting face 27 of frame 7, with the spacer member 34 holding the casting out from face 27 at its lower end. The retaining portions 36, 37 prevent lateral displacement of the casting relative to the frame 7. The motor 65 is then started and the rota tion of the unbalanced wheel 66 will reciprocate the frame 7 or oscillate it about shaft 6. The velocity of movement of the frame 7 in a downward or counterclockwise direction of Fig. 1, under the action of wheel 66, is greater than the velocity of a body falling under the pull of gravity, and therefore the frame 7 will move away from the upper end of the casting 67 on this down stroke, and on the up stroke of the frame 7 the upper end thereof adjacent the motor 65 will sharply impact the upper end of the falling casting 67 to jolt the same and loosen the burnt core, which will, when it has been sufliciently broken up by continued joltings of the casting, as the frame reciprocates, gravitate out of the casting through any opening adjacent the base or lower end of the casting, which in a sectional boiler casting, such as shown, would be the nipple receiving apertures 68 which are employed in joining a plurality of the sections together. The resilient means 47, 48 limit the stroke of the frame 7 so that it reciprocates in time with the throw of the unbalanced wheel 66.

l/Vhat I claim and desire to secure by Letters Patent of the United States is:

1. A jolt machine for removing burnt core sand from hollow castings, comprising a frame having a face adapted to receive and to support a hollow casting containing a g burnt core, means supporting said frame for reciprocation in a plane transverse to said face, means to hold the casting against movement longitudinally of said frame by force of gravity during reciprocation of said frame, and means to reciprocate said frame at a d0wn-stroke velocity greater than the velocity of a falling body whereby said frame will permit the hollow casting carried thereby to fall by gravity during the downstroke of .12

the frame reciprocation and will sharply impact the freely falling casting upon the upstroke of its reciprocation to break up the contained burnt core and lift the casting through the remainder of the frame tip-stroke I to complete a cycle.

2. A jolt machine for removing burnt core sand from hollow castings, comprising a frame having an inclined face adapted to receive and to support a hollow casting containing a burnt core, means supporting said frame for reciprocation in a plane transverse to said face, a supporting member secured to said frame adjacent the lower end thereof and cooperable with a casting to hold the same against movement longitudinally of said frame by force of gravity during reciprocation of said frame, and means mounted rigidly on said frame to reciprocate said frame at a down-stroke velocity greater than the velocity of a falling body whereby said frame will permit the hollow casting carried thereby to fall by gravity during the down-stroke of the frame reciprocation and will sharply impact the freely falling casting upon the up stroke of its reciprocation to break up the contained burnt core and lift the casting through the remainder of the frame up-stroke to complete a cycle.

3. A device of the character described, comprising a frame having a pivotal sup port and having a face adapted to receive a member to be jolted, an abutment, resilient means positioned between said frame and said abutment to support said frame in an inclined position, means on said frame to normally maintain the member to be jolted inclined to said frame, and means mounted on said frame to reciprocate said frame.

4. A device of the character described, comprising a rigid frame having a pivotal support and having a face adapted to receive a member to be jolted, means to prevent displacement of said member in a plane substantially parallel to the face of said frame, an abutment, resilient means positioned between said frame and said abutment to support said frame in an inclined position, and unbalanced rotary means mounted on said frame to reciprocate said frame in a plane transverse to said face.

5. A device of the character described, comprising a base member, a frame pivoted in inclined position on said base member, said frame having a support member at its lower end adapted for engagement by the lower end of a member to be jolted on the frame, said frame having means to prevent lateral displacement of the member to be jolted, resilient means to support said frame in inclined position, and means on said frame to reciprocate said frame in a plane transverse to the plane of said frame.

6. A device of the character described, comprising a base member, a frame pivoted in inclined position on said base member, said frame having a support member extending across the frame substantially at right angles to the plane of the face thereof and parallel to said base member and adapted for engagement by the lower end of a member to be jolted in inclined position on the frame, said frame having means to prevent lateral displacement of the supported mem- 7 ber resilient means to su ort said frame in inclined position, -and motor means having an-unbalanced rotor, sald motor means being mounted on said frame to reclprocate sald frame ina plane transverse to the plane'of said :frame. V i

7. A device of the character described, comprising a base member, a frame pivotally supported on said base member, an abutment, a pair of levers pivoted respectively to said frame and abutment and to each other, resilient means between said levers and opposing movement of the levers toward each other, and means to reciprocate the frame.

8. A device of the character described, comprising a base member, a frame pivotally supported on said base member, an abutment, a pair of bell-crank levers, one pair of the lever arms having pivotal engagement and the other pair of arms being in substantially parallel opposed relation, resilientmeans interposed between said opposed arms, the opposed arms being connected respectively to said abutment and to said frame, and means to reciprocate said frame.

9. A device of the character described,-

comprising a base member, a frame pivotally supported on said base member, an abutment, a pair of bell-crank levers, one pair of the lever arms having pivotal engagement and the other pair of arms being in substantially parallel opposed relation, said opposed arms having oppositely disposed sockets, a spring member interposed between said opposed arms and having its ends seated respectively in said sockets, the opposed arms being connected respectively to said abutment and to said frame, and means to reciprocate said frame.

10. A device of the character described,

comprising a base member, a frame pivotallysupported on said base member, an abutment, a pair of bell-crank levers, one pair of the lever arms having pivotal engagement and the other pair of arms being in substantially parallel opposed relation, said opposed arms having oppositely disposed sockets, a spring member interposed between said opposed arms and having its ends seated respectively in said sockets, said opposed arms having lug members, said lug members being pivotally connected respectively to said abutment and to said frame, and means to reciprocate said frame.

11. The method of removing cores of burnt core sand from hollow castings, which comprises positioning a hollow casting containing a burnt core on a supporting means, removing the supporting means from beneath the casting by movement in a substantially I vertical plane and at a greater rate than the velocity of fall of the casting under the force of gravity whereby the casting falls freely,.

and then returning the supporting means into supporting engagement With said cast- Q30 ing with a force sufiic'ient to lift the casting to initial position whereby the casting is struck forcibly and sharply to break up the sand core and to raise the casting to initial position to complete a cycle of operation.

In tesLimony whereof I have hereunto signed my name VERNON J. DAVIS 

